/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.dolphinscheduler.plugin.datasource.athena.param;

import com.google.auto.service.AutoService;
import org.apache.dolphinscheduler.common.constants.Constants;
import org.apache.dolphinscheduler.common.constants.DataSourceConstants;
import org.apache.dolphinscheduler.common.utils.JSONUtils;
import org.apache.dolphinscheduler.plugin.datasource.api.datasource.AbstractDataSourceProcessor;
import org.apache.dolphinscheduler.plugin.datasource.api.datasource.BaseDataSourceParamDTO;
import org.apache.dolphinscheduler.plugin.datasource.api.datasource.DataSourceProcessor;
import org.apache.dolphinscheduler.plugin.datasource.api.utils.PasswordUtils;
import org.apache.dolphinscheduler.spi.datasource.BaseConnectionParam;
import org.apache.dolphinscheduler.spi.datasource.ConnectionParam;
import org.apache.dolphinscheduler.spi.enums.DbType;

import org.apache.commons.collections4.MapUtils;
import org.apache.commons.lang3.StringUtils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

@AutoService(DataSourceProcessor.class)
public class AthenaDataSourceProcessor extends AbstractDataSourceProcessor {

  @Override
  public BaseDataSourceParamDTO castDatasourceParamDTO(String paramJson) {
    return JSONUtils.parseObject(paramJson, AthenaDataSourceParamDTO.class);
  }

  @Override
  public BaseDataSourceParamDTO createDatasourceParamDTO(String connectionJson) {
    AthenaConnectionParam
        connectionParams = (AthenaConnectionParam) this.createConnectionParams(connectionJson);

    AthenaDataSourceParamDTO
        athenaDatasourceParamDTO = new AthenaDataSourceParamDTO();
    athenaDatasourceParamDTO.setAwsRegion(connectionParams.getAwsRegion());
    athenaDatasourceParamDTO.setDatabase(connectionParams.getDatabase());
    athenaDatasourceParamDTO.setUserName(connectionParams.getUser());
    athenaDatasourceParamDTO.setOther(this.parseOther(connectionParams.getOther()));

    return athenaDatasourceParamDTO;
  }

  @Override
  public BaseConnectionParam createConnectionParams(BaseDataSourceParamDTO datasourceParam) {
    AthenaDataSourceParamDTO athenaParam = (AthenaDataSourceParamDTO) datasourceParam;
    String address =
        String.format("%s%s=%s;", DataSourceConstants.JDBC_ATHENA, "AwsRegion", athenaParam.getAwsRegion());

    AthenaConnectionParam
        athenaConnectionParam = new AthenaConnectionParam();
    athenaConnectionParam.setUser(athenaParam.getUserName());
    athenaConnectionParam.setPassword(PasswordUtils.encodePassword(athenaParam.getPassword()));
    athenaConnectionParam.setAwsRegion(athenaParam.getAwsRegion());
    athenaConnectionParam.setOther(this.transformOther(athenaParam.getOther()));
    athenaConnectionParam.setAddress(address);
    athenaConnectionParam.setJdbcUrl(address);
    athenaConnectionParam.setDatabase(athenaParam.getDatabase());
    athenaConnectionParam.setDriverClassName(this.getDatasourceDriver());
    athenaConnectionParam.setValidationQuery(this.getValidationQuery());
    athenaConnectionParam.setProps(athenaParam.getOther());

    return athenaConnectionParam;
  }

  @Override
  public ConnectionParam createConnectionParams(String connectionJson) {
    return JSONUtils.parseObject(connectionJson, AthenaConnectionParam.class);
  }

  @Override
  public String getDatasourceDriver() {
    return DataSourceConstants.COM_ATHENA_JDBC_DRIVER;
  }

  @Override
  public String getValidationQuery() {
    return DataSourceConstants.ATHENA_VALIDATION_QUERY;
  }

  @Override
  public String getJdbcUrl(ConnectionParam connectionParam) {
    AthenaConnectionParam
        athenaConnectionParam = (AthenaConnectionParam) connectionParam;
    if (!StringUtils.isEmpty(athenaConnectionParam.getOther())) {
      return String.format("%s%s", athenaConnectionParam.getJdbcUrl(), athenaConnectionParam.getOther());
    }
    return athenaConnectionParam.getJdbcUrl();
  }

  @Override
  public Connection getConnection(ConnectionParam connectionParam) throws ClassNotFoundException, SQLException {
    AthenaConnectionParam athenaConnectionParam = (AthenaConnectionParam) connectionParam;
    Class.forName(this.getDatasourceDriver());
    return DriverManager.getConnection(this.getJdbcUrl(connectionParam),
        athenaConnectionParam.getUser(), PasswordUtils.decodePassword(athenaConnectionParam.getPassword()));
  }

  @Override
  public DbType getDbType() {
    return DbType.ATHENA;
  }

  @Override
  public DataSourceProcessor create() {
    return new AthenaDataSourceProcessor();
  }

  private String transformOther(Map<String, String> otherMap) {
    if (MapUtils.isNotEmpty(otherMap)) {
      List<String> list = new ArrayList<>(otherMap.size());
      otherMap.forEach((key, value) -> list.add(String.format("%s=%s", key, value)));
      return String.join(Constants.SEMICOLON, list);
    }
    return null;
  }

  private Map<String, String> parseOther(String other) {
    Map<String, String> otherMap = new LinkedHashMap<>();
    if (StringUtils.isEmpty(other)) {
      return otherMap;
    }
    String[] configs = other.split(Constants.SEMICOLON);
    for (String config : configs) {
      otherMap.put(config.split(Constants.EQUAL_SIGN)[0], config.split(Constants.EQUAL_SIGN)[1]);
    }
    return otherMap;
  }

  @Override
  protected void checkHost(String host) {
    // Do not need to set the host, nothing to do
  }

  @Override
  protected void checkDatabasePatter(String database) {
    // Do not need to set the database, nothing to do
  }
}
